Important
portmap
service as outlined in Section 3.2.2, “Securing Portmap”. NFS traffic now utilizes TCP in all versions, rather than UDP, and requires it when using NFSv4. NFSv4 now includes Kerberos user and group authentication, as part of the RPCSEC_GSS
kernel module. Information on portmap
is still included, since Fedora supports NFSv2 and NFSv3, both of which utilize portmap
.